The length of the plot rectangle is 6 dm, the width is 4 dm less, find the perimeter and area of the plot.

According to the condition of the assignment, it is necessary to find the perimeter and area of a rectangular piece of land, the length of which is 6 dm, and the width is 4 dm less.

The sum of all sides of the rectangle is calculated by the formula:

P = 2a + 2b.

Substitute the known values:

P = 2 * 6 + 2 * (6 – 4). According to the order of performing mathematical operations, first of all, we find the value in brackets, then we perform multiplication and only then addition:

12 + 4 = 16 dm

The area of the plot corresponds to:

S = a * b = 6 * 2 = 12 dm².